Problems setting up wifi with my chromebook

I have just started setting my HP LaserJet 100 colour MFP M175nw printer up with my chromebook and can not get the wireless conection set up at all. All information I find is for all other types e.g window 7, Mac etc. but nothing for a chromebook. PLEASE can you help me as I am unable to work untill I can sort it out.

Many Thank
SilverRoseJewls